可以把 QML 类型导入应用程序，使用以下 import 语句在 .qml 文件：
import QtQuick.VirtualKeyboard 2.2 import QtQuick.VirtualKeyboard.Styles 2.2 import QtQuick.VirtualKeyboard.Settings 2.2
除导入类型外，
QT_IM_MODULE
环境变量必须被设为
qtvirtualkeyboard
。更多信息，见
加载插件
.
样式化：
| KeyIcon | 具有可调节颜色的键图标 |
| KeyPanel | 样式化键的基类型 |
| KeyboardStyle | 为虚拟键盘提供样式化接口 |
| SelectionListItem | A base type for selection list item delegates |
| TraceCanvas | A specialized Canvas type for rendering Trace objects |
| TraceInputKeyPanel | 跟踪输入键的基类型 |
设置：
| VirtualKeyboardSettings | 提供用于虚拟键盘的设置 |
输入框架和键：
| BackspaceKey | Backspace key for keyboard layouts |
| BaseKey | Common parent for all key types |
| ChangeLanguageKey | Change language key for keyboard layouts |
| EnterKey | Enter key for keyboard layouts |
| EnterKeyAction | Provides attached properties for customizing the enter key |
| FillerKey | Filler key for keyboard layouts |
| FlickKey | Flick key for keyboard layouts |
| HandwritingInputPanel | Provides a handwriting panel add-on for the virtual keyboard UI |
| HandwritingModeKey | Hand writing mode key for keyboard layouts |
| HideKeyboardKey | Hide keyboard key for keyboard layouts |
| InputContext | 提供对输入上下文的访问 |
| InputEngine | 将用户输入映射到输入法 |
| InputMethod | Base type for creating input method in QML |
| InputModeKey | Input mode key for keyboard layouts |
| InputPanel | Provides the virtual keyboard UI |
| Key | Regular character key for keyboard layouts |
| KeyboardColumn | Keyboard column for keyboard layouts |
| KeyboardLayout | 键盘布局 |
| KeyboardLayoutLoader | Allows dynamic loading of keyboard layout |
| KeyboardObserver | Acts as a hub for keyboard event notifications |
| KeyboardRow | Keyboard row for keyboard layouts |
| ModeKey | Generic mode key for keyboard layouts |
| NumberKey | Specialized number key for keyboard layouts |
| SelectionListModel | Provides a data model for the selection lists |
| ShiftHandler | 管理 Shift 状态 |
| ShiftKey | Shift key for keyboard layouts |
| SpaceKey | Space key for keyboard layouts |
| SymbolModeKey | Symbol mode key for keyboard layouts |
| Trace | Data model for touch input data |
| TraceInputArea | A specialized MultiPointTouchArea for collecting touch input data |
| TraceInputKey | A specialized key for collecting touch input data |
| VirtualKeyboard | Provides attached properties for customizing the virtual keyboard |
